package com.jyl.gateway.filter;

import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

@Component
public class GateWayFilter implements GlobalFilter, Ordered {

    //添加请求头，表示经过路由
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        ServerHttpRequest host = exchange.getRequest().mutate().header("from", "gateway").build();
        ServerWebExchange build = exchange.mutate().request(host).build();
        return chain.filter(build);
    }

    @Override
    public int getOrder() {
        return -1;
    }
}

